IMID 2024, Jeju, Korea

IMID 2024, Jeju, Korea

August 20 - August 23, 2024 (Tue. - Fri.), ICC Jeju

Terahertz Chiral Metasurface Based on Kirigami Structure for Controlling Circular Dichroism

Kyungbin Cho, Wonwoo Lee, and Hojin Lee

Abstract

 The utilization of terahertz (THz) frequency range in spectroscopy provides immense promise for various applications such as enantiomer identification, biomolecular analysis, medical diagnostics, pharmaceutical assessment, and security screening due to its unique characteristics, including linear wave propagation, object penetration, and low photon energy. Notably, terahertz circular dichroism (TCD) spectroscopy emerges as a potent tool for analyzing material properties and discerning enantiomers in biomolecules like nucleic acids and proteins. However, the inherent low response of biomolecules to circular dichroism (CD) in the THz range presents a formidable obstacle in biomolecular analysis. To address this challenge, chiral metamaterials offer a solution by enabling precise control over electromagnetic wave characteristics such as transmission, phase, and polarization in the THz range, thereby enhancing the amplification of chirality properties in materials. In this study, we propose a novel approach to manipulate TCD utilizing a chiral metasurface based on a kirigami structure.